Question

我想知道是否有人可以帮助我使用这个SP，我不知道为什么，但程序只插入select内部de Insert语句的第一个结果（大约20行）。我做错了什么？

DELIMITER $$

DROP PROCEDURE IF EXISTS `sp_tine_tb_temp_month`$$

CREATE
    /*[DEFINER = { user | CURRENT_USER }]*/
    PROCEDURE `db_sumarizados`.`sp_tine_tb_temp_month`()

    BEGIN
  DECLARE no_more_rows BOOLEAN DEFAULT FALSE;
  DECLARE a CHAR(16);
  DECLARE b DATE;
  DECLARE cur CURSOR FOR SELECT SITE_NE_NAME, DATE FROM unl_tb_ecl_stat_hh WHERE DATE BETWEEN '2014-04-01' AND '2014-04-30' GROUP BY SITE_NE_NAME, DATE HAVING COUNT(*) < 24;
  DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_rows := TRUE;

  CREATE TEMPORARY TABLE IF NOT EXISTS sitios_elegidos (
  SITE_NE_NAME CHAR(16), FECHA DATE, HORA TIME
  );

  OPEN cur;

  read_loop: LOOP
    FETCH cur INTO a, b;

    IF no_more_rows THEN
      LEAVE read_loop;
    END IF;

    INSERT INTO sitios_elegidos (SITE_NE_NAME, FECHA, HORA) SELECT SITE_NE_NAME, FECHA, HORA FROM time_intervals i LEFT JOIN tb_de_pruebas p ON i.fecha = p.DATE AND i.hora = p.TIME WHERE SITE_NE_NAME = a AND DATE = b;

  END LOOP;

  CLOSE cur;

 END$$

DELIMITER ;

Answer 1

SET no_more_rows = FALSE;

......就在......之前......

END LOOP;

否则，如果INSERT ... SELECT找不到任何内容，则可能会在光标实际耗尽之前过早地使CONTINUE处理程序跳闸并将值设置为TRUE。

从Cursor中选择插入 - MySQL

1 个答案: